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Envirothon
Don't Top Trees!
11
Environmental Studies
5th Grade
02/05/2012

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Cards

Term
Why NOT to top:
starvation
Definition
topping removes so much of the tree's leafy crown that it dangerously reduces the tree's ability to make food
Term
Why NOT to top:
shock
Definition
by removing the protective cover of the tree's canopy, bark tissue is exposed to direct rays of the sun; this scalding can cause a tree to die
Term
Why NOT to top:
insects and disease
Definition
exposed ends of topped limbs are vulnerable to insect invasion or decay fungi species
Term
Why NOT to top:
weak limbs
Definition
new branches that form from a stubbed limb are weakly attached and more likely to break from the weight of snow and ice
Term
Why NOT to top:
rapid new growth
Definition
instead of controlling height and spread, topping does the opposite; new branches are more numerous and grow higher
Term
Why NOT to top:
tree death
Definition
some trees can't tolerate major limb loss and survive; some grow weak and are prone to disease
Term
Why NOT to top:
ugliness
Definition
topped trees are disfigured
Term
Why NOT to top:
cost
Definition
hidden costs: lower property value, expense of removal of tree if it dies
Term
Proper Pruning
crown reduction
Definition
controls height while keeping form and beauty
Term
Proper Pruning
growth
Definition
pruned trees grow slowly and distributes growth more naturally than topped trees
Term
Proper Pruning
is done by
Definition
an arborist
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